Optical imaging lens

ABSTRACT

Present embodiments provide for an optical imaging lens. The optical imaging lens includes a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and seven lens element positioned in an order from an object side to an image side. Through the arrangement of convex or concave surfaces of the seven lens elements, the length of the optical imaging lens may be shortened while providing better optical characteristics and imaging quality.

CROSS REFERENCE TO RELATED APPLICATION

This application claims priority to P.R.C. Patent Application No.201611254148.3, titled “Optical Imaging Lens,” filed Dec. 30, 2016, withthe State Intellectual Property Office of the People's Republic of China(SIPO), which is incorporated herein by its entirety.

TECHNICAL FIELD

The present disclosure relates to an optical imaging lens, andparticularly, to an optical imaging lens having seven lens elements.

BACKGROUND

Technology improves every day, continuously expanding consumer demandfor increasingly compact electronic devices. This applies in the contextof optical imaging lens characteristics, in that key components foroptical imaging lenses incorporated into consumer electronic productsshould keep pace with technological improvements in order to meet theexpectations of consumers. For example, in a typical optical imaginglens having seven lens elements, the distance from the object sidesurface of the first lens element to the image plane along the opticalaxis is too large to accommodate the dimensions of today's cell phonesor digital cameras and to focus light on an imaging plane.

In this manner, there is a desirable objective for reducing the size ofthe imaging lens while maintaining good imaging quality and opticalcharacteristics, and designing the imaging lens having good imagingquality and small size.

SUMMARY

The present disclosure provides for an optical imaging lens. Bydesigning the convex and/or concave surfaces of the seven lens elements,the length of the optical imaging lens may be shortened whilemaintaining good optical characteristics and imaging quality.

In the present disclosure, parameters used herein may be chosen from butnot limited to parameters listed below:

Parameter Definition T1 The central thickness of the first lens elementalong the optical axis G1 The air gap between the first lens element andthe second lens element along the optical axis T2 The central thicknessof the second lens element along the optical axis G2 The air gap betweenthe second lens element and the third lens element along the opticalaxis T3 The central thickness of the third lens element along theoptical axis G3 The air gap between the third lens element and thefourth lens element along the optical axis T4 The central thickness ofthe fourth lens element along the optical axis G4 The air gap betweenthe fourth lens element and the fifth lens element along the opticalaxis T5 The central thickness of the fifth lens element along theoptical axis G5 The air gap between the fifth lens element and the sixthlens element along the optical axis T6 The central thickness of thesixth lens element along the optical axis G6 The air gap between thesixth lens element and the seventh lens element along the optical axisT7 The central thickness of the seventh lens element along the opticalaxis G7F The air gap between the seventh lens element and the filteringunit along the optical axis TF The central thickness of the filteringunit along the optical axis GFP The air gap between the filtering unitand an image plane along the optical axis f1 The focusing length of thefirst lens element f2 The focusing length of the second lens element f3The focusing length of the third lens element f4 The focusing length ofthe fourth lens element f5 The focusing length of the fifth lens elementf6 The focusing length of the sixth lens element f7 The focusing lengthof the seventh lens element n1 The refracting index of the first lenselement n2 The refracting index of the second lens element n3 Therefracting index of the third lens element n4 The refracting index ofthe fourth lens element n5 The refracting index of the fifth lenselement n6 The refracting index of the sixth lens element n7 Therefracting index of the seventh lens element v1 The Abbe number of thefirst lens element v2 The Abbe number of the second lens element v3 TheAbbe number of the third lens element v4 The Abbe number of the fourthlens element v5 The Abbe number of the fifth lens element v6 The Abbenumber of the sixth lens element v7 The Abbe number of the seventh lenselement HFOV Half Field of View of the optical imaging lens Fno F-numberof the optical imaging lens EFL The effective focal length of theoptical imaging lens TTL The distance between the object-side surface ofthe first lens element and an image plane along the optical axis ALT Thesum of the central thicknesses of the seven lens elements AAG The sum ofall air gaps between the seven lens elements along the optical axis BFLThe back focal length of the optical imaging lens/The distance from theimage- side surface of the seventh lens element to the image plane alongthe optical axis TL The distance from the object-side surface of thefirst lens element to the image- side surface of the seventh lenselement along the optical axis

In some embodiments, an optical imaging lens may comprise sequentiallyfrom an object side to an image side along an optical axis, a first,second, third, fourth, fifth, sixth and seventh lens elements. Each ofthe first, second, third, fourth, fifth, sixth and seventh lens elementshave varying refracting power in some embodiments. Additionally, thelens elements may comprise an object-side surface facing toward theobject side, an image-side surface facing toward the image side, and acentral thickness defined along the optical axis. Moreover, theobject-side surface of the third lens element may comprise a convexportion in a vicinity of a periphery of the third lens element, theobject-side surface of the fifth lens element may comprise a convexportion in a vicinity of the optical axis, the image-side surface of thefifth lens element may comprise a concave portion in a vicinity of theoptical axis, the object-side surface of the sixth lens element maycomprise a concave portion in a vicinity of the optical axis, theimage-side surface of the seventh lens element may comprise a concaveportion in a vicinity of the optical axis.

According to some embodiments of the optical imaging lens of the presentdisclosure, the optical imaging lens may comprise no other lenses havingrefracting power beyond the seven lens elements. Further, the size ofthe optical imaging lens may be reduced while the optical imaging lensmay satisfy any one of inequalities as follows:

TL/(G2+G3)≤9.90  Inequality (1);

EFL/(T4+T7)≤5.20  Inequality (2);

TTL/T4≤13.10  Inequality (3);

TTL/(T1+T5)≤6.80  Inequality (4);

TL/(T3+T7)≤8.20  Inequality (5);

ALT/G3≤7.80  Inequality (6);

ALT/(G2+G6)≤9.50  Inequality (7);

EFL/(G1+G3)≤9.70  Inequality (8);

(T1+T6)/T3≤8.60  Inequality (9);

TL/(G2+G5)≤12.60  Inequality (10);

EFL/(G4+G6)≤10.10  Inequality (11);

EFL/T4≤9.80  Inequality (12);

TTL/(T2+T5)≤9.60  Inequality (13);

ALT/(T3+T7)≤5.80  Inequality (14);

TTL/G3≤13.80  Inequality (15);

EFL/(G2+G6)≤12.60  Inequality (16);

ALT/(G1+G3)≤7.60  Inequality (17);

(T1+T6)/G6≤5.80  Inequality (18).

In consideration of the non-predictability of the optical imaging lens,while the optical imaging lens may satisfy any one of inequalitiesdescribed above, the optical imaging lens herein perfectly may achieveshorten length, provide an enlarged aperture, increase the field ofview, increase imaging quality and/or assembly yield, and/or effectivelyimprove drawbacks of a typical optical imaging lens.

Embodiments according to the present disclosure are not limited andcould be selectively incorporated in other embodiments described herein.In some embodiments, more details about the parameters could beincorporated to enhance the control for the system performance and/orresolution. It is noted that the details listed here could beincorporated into example embodiments if no inconsistency occurs.

BRIEF DESCRIPTION OF THE DRAWINGS

Exemplary embodiments will be more readily understood from the followingdetailed description when read in conjunction with the appended drawing,in which:

FIG. 1 depicts a cross-sectional view of one single lens elementaccording to the present disclosure;

FIG. 2 depicts a schematic view of the relation between the surfaceshape and the optical focus of the lens element;

FIG. 3 depicts a schematic view of a first example of the surface shapeand the effective radius of the lens element;

FIG. 4 depicts a schematic view of a second example of the surface shapeand the effective radius of the lens element;

FIG. 5 depicts a schematic view of a third example of the surface shapeand the effective radius of the lens element;

FIG. 6 depicts a cross-sectional view of a first embodiment of anoptical imaging lens having seven lens elements according to the presentdisclosure;

FIG. 7 depicts a chart of longitudinal spherical aberration and otherkinds of optical aberrations of a first embodiment of the opticalimaging lens according to the present disclosure;

FIG. 8 depicts a table of optical data for each lens element of theoptical imaging lens of a first embodiment of the present disclosure;

FIG. 9 depicts a table of aspherical data of a first embodiment of theoptical imaging lens according to the present disclosure;

FIG. 10 depicts a cross-sectional view of a second embodiment of anoptical imaging lens having seven lens elements according to the presentdisclosure;

FIG. 11 depicts a chart of longitudinal spherical aberration and otherkinds of optical aberrations of a second embodiment of the opticalimaging lens according the present disclosure;

FIG. 12 depicts a table of optical data for each lens element of theoptical imaging lens of a second embodiment of the present disclosure;

FIG. 13 depicts a table of aspherical data of a second embodiment of theoptical imaging lens according to the present disclosure;

FIG. 14 depicts a cross-sectional view of a third embodiment of anoptical imaging lens having seven lens elements according to the presentdisclosure;

FIG. 15 depicts a chart of longitudinal spherical aberration and otherkinds of optical aberrations of a third embodiment of the opticalimaging lens according the present disclosure;

FIG. 16 depicts a table of optical data for each lens element of theoptical imaging lens of a third embodiment of the present disclosure;

FIG. 17 depicts a table of aspherical data of a third embodiment of theoptical imaging lens according to the present disclosure;

FIG. 18 depicts a cross-sectional view of a fourth embodiment of anoptical imaging lens having seven lens elements according to the presentdisclosure;

FIG. 19 depicts a chart of longitudinal spherical aberration and otherkinds of optical aberrations of a fourth embodiment of the opticalimaging lens according the present disclosure;

FIG. 20 depicts a table of optical data for each lens element of theoptical imaging lens of a fourth embodiment of the present disclosure;

FIG. 21 depicts a table of aspherical data of a fourth embodiment of theoptical imaging lens according to the present disclosure;

FIG. 22 depicts a cross-sectional view of a fifth embodiment of anoptical imaging lens having seven lens elements according to the presentdisclosure;

FIG. 23 depicts a chart of longitudinal spherical aberration and otherkinds of optical aberrations of a fifth embodiment of the opticalimaging lens according the present disclosure;

FIG. 24 depicts a table of optical data for each lens element of theoptical imaging lens of a fifth embodiment of the present disclosure;

FIG. 25 depicts a table of aspherical data of a fifth embodiment of theoptical imaging lens according to the present disclosure;

FIG. 26 depicts a cross-sectional view of a sixth embodiment of anoptical imaging lens having seven lens elements according to the presentdisclosure;

FIG. 27 depicts a chart of longitudinal spherical aberration and otherkinds of optical aberrations of a sixth embodiment of the opticalimaging lens according to the present disclosure;

FIG. 28 depicts a table of optical data for each lens element of a sixthembodiment of an optical imaging lens according to the presentdisclosure;

FIG. 29 depicts a table of aspherical data of a sixth embodiment of theoptical imaging lens according to the present disclosure;

FIG. 30 depicts a cross-sectional view of a seventh embodiment of anoptical imaging lens having seven lens elements according to the presentdisclosure;

FIG. 31 depicts a chart of longitudinal spherical aberration and otherkinds of optical aberrations of a seventh embodiment of the opticalimaging lens according to the present disclosure;

FIG. 32 depicts a table of optical data for each lens element of theoptical imaging lens of a seventh embodiment of the present disclosure;

FIG. 33 depicts a table of aspherical data of a seventh embodiment ofthe optical imaging lens according to the present disclosure;

FIG. 34 depicts a cross-sectional view of an eighth embodiment of anoptical imaging lens having seven lens elements according to the presentdisclosure;

FIG. 35 depicts a chart of longitudinal spherical aberration and otherkinds of optical aberrations of an eighth embodiment of the opticalimaging lens according to the present disclosure;

FIG. 36 depicts a table of optical data for each lens element of theoptical imaging lens of an eighth embodiment of the present disclosure;

FIG. 37 depicts a table of aspherical data of an eighth embodiment ofthe optical imaging lens according to the present disclosure;

FIG. 38 depicts a cross-sectional view of a ninth embodiment of anoptical imaging lens having seven lens elements according to the presentdisclosure;

FIG. 39 depicts a chart of longitudinal spherical aberration and otherkinds of optical aberrations of a ninth embodiment of the opticalimaging lens according to the present disclosure;

FIG. 40 depicts a table of optical data for each lens element of theoptical imaging lens of a ninth embodiment of the present disclosure;

FIG. 41 depicts a table of aspherical data of a ninth embodiment of theoptical imaging lens according to the present disclosure;

FIG. 42 depicts a cross-sectional view of a tenth embodiment of anoptical imaging lens having seven lens elements according to the presentdisclosure;

FIG. 43 depicts a chart of longitudinal spherical aberration and otherkinds of optical aberrations of a tenth embodiment of the opticalimaging lens according to the present disclosure;

FIG. 44 depicts a table of optical data for each lens element of theoptical imaging lens of a tenth embodiment of the present disclosure;

FIG. 45 depicts a table of aspherical data of a tenth embodiment of theoptical imaging lens according to the present disclosure;

FIG. 46 and FIG. 46A are two tables for the values of ALT, AAG, BFL,TTL, TL, TL/(G2+G3), EFL/(T4+T7), TTL/T4, TTL/(T1+T5), TL/(T3+T7),ALT/G3, ALT/(G2+G6), EFL/(G1+G3), (T1+T6)/T3, TL/(G2+G5), EFL/(G4+G6),EFL/T4, TTL/(T2+T5), ALT/(T3+T7), TTL/G3, EFL/(G2+G6), ALT/(G1+G3) and(T1+T6)/G6 of the all ten example embodiments.

DETAILED DESCRIPTION

For a more complete understanding of the present disclosure and itsadvantages, reference is now made to the following description taken inconjunction with the accompanying drawings, in which like referencenumbers indicate like features. Persons having ordinary skill in the artwill understand other varieties for implementing example embodiments,including those described herein. The drawings are not limited tospecific scale and similar reference numbers are used for representingsimilar elements. As used in the disclosures and the appended claims,the terms “example embodiment,” “exemplary embodiment,” and “presentembodiment” do not necessarily refer to a single embodiment, although itmay, and various example embodiments may be readily combined andinterchanged, without departing from the scope or spirit of the presentdisclosure. Furthermore, the terminology as used herein is for thepurpose of describing example embodiments only and is not intended to bea limitation of the disclosure. In this respect, as used herein, theterm “in” may include “in” and “on”, and the terms “a”, “an” and “the”may include singular and plural references. Furthermore, as used herein,the term “by” may also mean “from”, depending on the context.Furthermore, as used herein, the term “if” may also mean “when” or“upon”, depending on the context. Furthermore, as used herein, the words“and/or” may refer to and encompass any and all possible combinations ofone or more of the associated listed items.

In the present disclosure, the description “a lens element havingpositive refracting power (or negative refracting power)” means that theparaxial refracting power of the lens element in Gaussian optics ispositive (or negative). The description “An object-side (or image-side)surface of a lens element” may include a specific region of that surfaceof the lens element where imaging rays are capable of passing throughthat region, namely the clear aperture of the surface. Theaforementioned imaging rays can be classified into two types, chief rayLc and marginal ray Lm. Taking a lens element depicted in FIG. 1 as anexample, the lens element may be rotationally symmetric, where theoptical axis I is the axis of symmetry. The region A of the lens elementis defined as “a part in a vicinity of the optical axis”, and the regionC of the lens element is defined as “a part in a vicinity of a peripheryof the lens element”. Besides, the lens element may also have anextending part E extended radially and outwardly from the region C,namely the part outside of the clear aperture of the lens element. Theextending part E may be used for physically assembling the lens elementinto an optical imaging lens system. Under normal circumstances, theimaging rays would not pass through the extending part E because thoseimaging rays only pass through the clear aperture. The structures andshapes of the aforementioned extending part E are only examples fortechnical explanation, the structures and shapes of lens elements shouldnot be limited to these examples. Note that the extending parts of thelens element surfaces depicted in the following embodiments arepartially omitted.

The following criteria are provided for determining the shapes and theparts of lens element surfaces set forth in the present disclosure.These criteria mainly determine the boundaries of parts under variouscircumstances including the part in a vicinity of the optical axis, thepart in a vicinity of a periphery of a lens element surface, and othertypes of lens element surfaces such as those having multiple parts.

FIG. 1 depicts a radial cross-sectional view of a lens element. Beforedetermining boundaries of those aforementioned portions, two referentialpoints should be defined first, the central point and the transitionpoint. The central point of a surface of a lens element is a point ofintersection of that surface and the optical axis. The transition pointis a point on a surface of a lens element, where the tangent line ofthat point is perpendicular to the optical axis. Additionally, ifmultiple transition points appear on one single surface, then thesetransition points are sequentially named along the radial direction ofthe surface with numbers starting from the first transition point. Forinstance, the first transition point (closest one to the optical axis),the second transition point, and the Nth transition point (farthest oneto the optical axis within the scope of the clear aperture of thesurface). The portion of a surface of the lens element between thecentral point and the first transition point is defined as the portionin a vicinity of the optical axis. The portion located radially outsideof the Nth transition point (but still within the scope of the clearaperture) is defined as the portion in a vicinity of a periphery of thelens element. In some embodiments, there are other portions existingbetween the portion in a vicinity of the optical axis and the portion ina vicinity of a periphery of the lens element; the numbers of portionsdepend on the numbers of the transition point(s). In addition, theradius of the clear aperture (or a so-called effective radius) of asurface is defined as the radial distance from the optical axis I to apoint of intersection of the marginal ray Lm and the surface of the lenselement.

Referring to FIG. 2, determining whether the shape of a portion isconvex or concave depends on whether a collimated ray passing throughthat portion converges or diverges. That is, while applying a collimatedray to a portion to be determined in terms of shape, the collimated raypassing through that portion will be bended and the ray itself or itsextension line will eventually meet the optical axis. The shape of thatportion can be determined by whether the ray or its extension line meets(intersects) the optical axis (focal point) at the object-side orimage-side. For instance, if the ray itself intersects the optical axisat the image side of the lens element after passing through a portion,i.e. the focal point of this ray is at the image side (see point R inFIG. 2), the portion will be determined as having a convex shape. On thecontrary, if the ray diverges after passing through a portion, theextension line of the ray intersects the optical axis at the object sideof the lens element, i.e. the focal point of the ray is at the objectside (see point M in FIG. 2), that portion will be determined as havinga concave shape. Therefore, referring to FIG. 2, the portion between thecentral point and the first transition point may have a convex shape,the portion located radially outside of the first transition point mayhave a concave shape, and the first transition point is the point wherethe portion having a convex shape changes to the portion having aconcave shape, namely the border of two adjacent portions.Alternatively, there is another method to determine whether a portion ina vicinity of the optical axis may have a convex or concave shape byreferring to the sign of an “R” value, which is the (paraxial) radius ofcurvature of a lens surface. The R value may be used in conventionaloptical design software such as Zemax and CodeV. The R value usuallyappears in the lens data sheet in the software. For an object-sidesurface, positive R means that the object-side surface is convex, andnegative R means that the object-side surface is concave. Conversely,for an image-side surface, positive R means that the image-side surfaceis concave, and negative R means that the image-side surface is convex.The result found by using this method should be consistent as by usingthe other way mentioned above, which determines surface shapes byreferring to whether the focal point of a collimated ray is at theobject side or the image side.

For none transition point cases, the portion in a vicinity of theoptical axis may be defined as the portion between 0-50% of theeffective radius (radius of the clear aperture) of the surface, whereasthe portion in a vicinity of a periphery of the lens element may bedefined as the portion between 50-100% of effective radius (radius ofthe clear aperture) of the surface.

Referring to the first example depicted in FIG. 3, only one transitionpoint, namely a first transition point, appears within the clearaperture of the image-side surface of the lens element. Portion I may bea portion in a vicinity of the optical axis, and portion II may be aportion in a vicinity of a periphery of the lens element. The portion ina vicinity of the optical axis may be determined as having a concavesurface due to the R value at the image-side surface of the lens elementis positive. The shape of the portion in a vicinity of a periphery ofthe lens element may be different from that of the radially inneradjacent portion, i.e. the shape of the portion in a vicinity of aperiphery of the lens element may be different from the shape of theportion in a vicinity of the optical axis; the portion in a vicinity ofa periphery of the lens element may have a convex shape.

Referring to the second example depicted in FIG. 4, a first transitionpoint and a second transition point may exist on the object-side surface(within the clear aperture) of a lens element. In which Here, portion Imay be the portion in a vicinity of the optical axis, and portion IIImay be the portion in a vicinity of a periphery of the lens element. Theportion in a vicinity of the optical axis may have a convex shapebecause the R value at the object-side surface of the lens element maybe positive. The portion in a vicinity of a periphery of the lenselement (portion III) may have a convex shape. What is more, there maybe another portion having a concave shape existing between the first andsecond transition point (portion II).

Referring to a third example depicted in FIG. 5, no transition point mayexist on the object-side surface of the lens element. In this case, theportion between 0-50% of the effective radius (radius of the clearaperture) may be determined as the portion in a vicinity of the opticalaxis, and the portion between 50-100% of the effective radius may bedetermined as the portion in a vicinity of a periphery of the lenselement. The portion in a vicinity of the optical axis of theobject-side surface of the lens element may be determined as having aconvex shape due to its positive R value, and the portion in a vicinityof a periphery of the lens element may be determined as having a convexshape as well.

Several exemplary embodiments and associated optical data will now beprovided to illustrate non-limiting examples of optical imaging lenssystems having good optical characteristics while increasing the fieldof view. Reference is now made to FIGS. 6-9. FIG. 6 illustrates anexample cross-sectional view of an optical imaging lens 1 having sixlens elements according to a first example embodiment. FIG. 7 showsexample charts of longitudinal spherical aberration and other kinds ofoptical aberrations of the optical imaging lens 1 according to the firstexample embodiment. FIG. 8 illustrates an example table of optical dataof each lens element of the optical imaging lens 1 according to thefirst example embodiment. FIG. 9 depicts an example table of asphericaldata of the optical imaging lens 1 according to the first exampleembodiment.

As shown in FIG. 6, the optical imaging lens 1 of the present embodimentmay comprise, in order from an object side A1 to an image side A2 alongan optical axis, an aperture stop 100, a first lens element 110, asecond lens element 120, a third lens element 130, a fourth lens element140, a fifth lens element 150, a sixth lens element 160 and a seventhlens element 170. A filtering unit 180 and an image plane 190 of animage sensor (not shown) are positioned at the image side A2 of theoptical imaging lens 1. Each of the first, second, third, fourth, fifthand sixth lens elements 110, 120, 130, 140, 150, 160, 170 and thefiltering unit 180 may comprise an object-side surface111/121/131/141/151/161/171/181 facing toward the object side A1 and animage-side surface 112/122/132/142/152/162/172/182 facing toward theimage side A2. The example embodiment of the filtering unit 180illustrated is an IR cut filter (infrared cut filter) positioned betweenthe seventh lens element 170 and an image plane 190. The filtering unit180 selectively absorbs light passing optical imaging lens 1 that has aspecific wavelength. For example, if IR light is absorbed, IR lightwhich is not seen by human eyes is prohibited from producing an image onthe image plane 190.

Exemplary embodiments of each lens element of the optical imaging lens 1will now be described with reference to the drawings. The lens elementsof the optical imaging lens 1 are constructed using plastic material, insome embodiments.

An example embodiment of the first lens element 110 may have positiverefracting power. The object-side surface 111 may comprise a convexportion 1111 in a vicinity of an optical axis and a convex portion 1112in a vicinity of a periphery of the first lens element 110. Theimage-side surface 112 may comprise a concave portion 1121 in a vicinityof the optical axis and a concave portion 1122 in a vicinity of theperiphery of the first lens element 110. The object-side surface 111 andthe image-side surface 112 may be aspherical surfaces.

An example embodiment of the second lens element 120 may have negativerefracting power. The object-side surface 121 may comprise a convexportion 1211 in a vicinity of the optical axis and a convex portion 1212in a vicinity of a periphery of the second lens element 120. Theimage-side surface 122 may comprise a concave portion 1221 in a vicinityof the optical axis and a concave portion 1222 in a vicinity of theperiphery of the second lens element 120.

An example embodiment of the third lens element 130 may have negativerefracting power. The object-side surface 131 may comprise a convexportion 1311 in a vicinity of the optical axis and a convex portion 1312in a vicinity of a periphery of the third lens element 130. Theimage-side surface 132 may comprise a concave portion 1321 in a vicinityof the optical axis and a concave portion 1322 in a vicinity of theperiphery of the third lens element 130.

An example embodiment of the fourth lens element 140 may have positiverefracting power. The object-side surface 141 may comprise a convexportion 1411 in a vicinity of the optical axis and a concave portion1412 in a vicinity of a periphery of the fourth lens element 140. Theimage-side surface 142 may comprise a concave portion 1421 in a vicinityof the optical axis and a convex portion 1422 in a vicinity of theperiphery of the fourth lens element 140.

An example embodiment of the fifth lens element 150 may have positiverefracting power. The object-side surface 151 may comprise a convexportion 1511 in a vicinity of the optical axis and a concave portion1512 in a vicinity of a periphery of the fifth lens element 150. Theimage-side surface 152 may comprise a concave portion 1521 in a vicinityof the optical axis and a convex portion 1522 in a vicinity of theperiphery of the fifth lens element 150.

An example embodiment of the sixth lens element 160 may have positiverefracting power. The object-side surface 161 may comprise a concaveportion 1611 in a vicinity of the optical axis and a concave portion1612 in a vicinity of a periphery of the sixth lens element 160. Theimage-side surface 162 may comprise a convex portion 1621 in a vicinityof the optical axis and a convex portion 1622 in a vicinity of theperiphery of the sixth lens element 160.

An example embodiment of the seventh lens element 170 may have negativerefracting power. The object-side surface 171 may comprise a concaveportion 1711 in a vicinity of the optical axis and a concave portion1712 in a vicinity of a periphery of the seventh lens element 170. Theimage-side surface 172 may comprise a concave portion 1721 in a vicinityof the optical axis and a convex portion 1722 in a vicinity of theperiphery of the seventh lens element 170.

In example embodiments, air gaps exist between the lens elements 110,120, 130, 140, 150, 160, 170, the filtering unit 180 and the image plane190 of the image sensor. For example, FIG. 6 illustrates the air gap d1existing between the first lens element 110 and the second lens element120, the air gap d2 existing between the second lens element 120 and thethird lens element 130, the air gap d3 existing between the third lenselement 130 and the fourth lens element 140, the air gap d4 existingbetween the fourth lens element 140 and the fifth lens element 150, theair gap d5 existing between the fifth lens element 150 and the sixthlens element 160, the air gap d6 existing between the sixth lens element160 and the seventh lens element 170, the air gap d7 existing betweenthe seventh lens element 170 and the filtering unit 180, and the air gapd8 existing between the filtering unit 180 and the image plane 190 ofthe image sensor. However, in other embodiments, any of the air gaps mayor may not exist. For example, the profiles of opposite surfaces of anytwo adjacent lens elements may correspond to each other, and in suchsituation, the air gap may not exist. The air gap d1 is denoted by G1,the air gap d2 is denoted by G2, the air gap d3 is denoted by G3, theair gap d4 is denoted by G4, the air gap d5 is denoted by G5, the airgap d6 is denoted by G6, the air gap d7 is denoted by G7F, the air gapd8 is denoted by GFP, and the sum of d1, d2, d3, d4, d5 and d6 isdenoted by AAG. FIG. 8 depicts the optical characteristics of each lenselements in the optical imaging lens 1 of the present embodiment.

The aspherical surfaces including the object-side surface 111 of thefirst lens element 110, the image-side surface 112 of the first lenselement 110, the object-side surface 121 and the image-side surface 122of the second lens element 120, the object-side surface 131 and theimage-side surface 132 of the third lens element 130, the object-sidesurface 141 and the image-side surface 142 of the fourth lens element140, the object-side surface 151 and the image-side surface 152 of thefifth lens element 150, the object-side surface 161 and the image-sidesurface 162 of the sixth lens element 160, the object-side surface 171and the image-side surface 172 of the sixth lens element 170 are alldefined by the following aspherical formula (1):

$\begin{matrix}{{Z(Y)} = {{\frac{Y^{2}}{R}/\left( {1 + \sqrt{1 - {\left( {1 + K} \right)\frac{Y^{2}}{R^{2}}}}} \right)} + {\sum\limits_{i = 1}^{n}{a_{i} \times Y^{i}}}}} & {{formula}\mspace{14mu} (1)}\end{matrix}$

wherein,

R represents the radius of curvature of the surface of the lens element;

Z represents the depth of the aspherical surface (the perpendiculardistance between the point of the aspherical surface at a distance Yfrom the optical axis and the tangent plane of the vertex on the opticalaxis of the aspherical surface);

Y represents the perpendicular distance between the point of theaspherical surface and the optical axis;

K represents a conic constant;

a_(i) represents an aspherical coefficient of i^(th) level.

The values of each aspherical parameter are shown in FIG. 9.

FIG. 7(a) shows the longitudinal spherical aberration, wherein thehorizontal axis of FIG. 7(a) defines the focus, and the vertical axis ofFIG. 7(a) defines the field of view. FIG. 7(b) shows the astigmatismaberration in the sagittal direction, wherein the horizontal axis ofFIG. 7(b) defines the focus, and the vertical axis of FIG. 7(b) definesthe image height. FIG. 7(c) shows the astigmatism aberration in thetangential direction, wherein the horizontal axis of FIG. 7(c) definesthe focus, and the vertical axis of FIG. 7(c) defines the image height.FIG. 7(d) shows the variation of the distortion aberration, wherein thehorizontal axis of FIG. 7(d) defines the percentage, and the verticalaxis of FIG. 7(d) defines the image height. The three curves withdifferent wavelengths (470 nm, 555 nm, 650 nm) represent that off-axislight with respect to these wavelengths may be focused around an imagepoint. From the vertical deviation of each curve shown in FIG. 7(a), theoffset of the off-axis light relative to the image point may be withinabout ±0.025 mm. Therefore, the first embodiment may improve thelongitudinal spherical aberration with respect to different wavelengths.Referring to FIG. 7(b), the focus variation with respect to the threedifferent wavelengths (470 nm, 555 nm, 650 nm) in the whole field mayfall within about ±0.03 mm. Referring to FIG. 7(c), the focus variationwith respect to the three different wavelengths (470 nm, 555 nm, 650 nm)in the whole field may fall within about ±0.03 mm. Referring to FIG.7(d), the horizontal axis of FIG. 7(d), the variation of the distortionaberration may be within about ±4.5%.

Please refer to FIG. 46 and FIG. 46A for the values of ALT, AAG, BFL,TTL, TL, TL/(G2+G3), EFL/(T4+T7), TTL/T4, TTL/(T1+T5), TL/(T3+T7),ALT/G3, ALT/(G2+G6), EFL/(G1+G3), (T1+T6)/T3, TL/(G2+G5), EFL/(G4+G6),EFL/T4, TTL/(T2+T5), ALT/(T3+T7), TTL/G3, EFL/(G2+G6), ALT/(G1+G3) and(T1+T6)/G6 of the present embodiment.

The distance from the object-side surface 111 of the first lens element110 to the image plane 190 along the optical axis (TTL) may be about5.847 mm, EFL may be about 4.306 mm, HFOV may be about 37.985 degrees,the image height may be about 3.33 mm, and Fno may be about 1.515. Inaccordance with these values, the present embodiment may provide anoptical imaging lens having a shortened length, and may be capable ofaccommodating a reduced product profile that also renders improvedoptical performance.

Reference is now made to FIGS. 10-13. FIG. 10 illustrates an examplecross-sectional view of an optical imaging lens 2 having seven lenselements according to a second example embodiment. FIG. 11 shows examplecharts of longitudinal spherical aberration and other kinds of opticalaberrations of the optical imaging lens 2 according to the secondexample embodiment. FIG. 12 shows an example table of optical data ofeach lens element of the optical imaging lens 2 according to the secondexample embodiment. FIG. 13 shows an example table of aspherical data ofthe optical imaging lens 2 according to the second example embodiment.The reference numbers labeled in the present embodiment are similar tothose in the first embodiment for the similar elements, but here thereference numbers are initialed with 2, for example, reference number231 for labeling the object-side surface of the third lens element 230,reference number 232 for labeling the image-side surface of the thirdlens element 230, etc.

As shown in FIG. 10, the optical imaging lens 2 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise an aperture stop 200, a first lens element210, a second lens element 220, a third lens element 230, a fourth lenselement 240, a fifth lens element 250, a sixth lens element 260 andseventh lens element 270.

The arrangement of the convex or concave surface structures, includingthe object-side surfaces 211, 221, 231, 241, 251, 261 and 271 and theimage-side surfaces 212, 232, 242, 262 and 272 are generally similar tothe optical imaging lens 1, but the refracting power of the second lenselement 220 is positive and the differences between the optical imaginglens 1 and the optical imaging lens 2 may include the convex or concavesurface structures of the image-side surfaces 222 and 252. Additionaldifferences may include a radius of curvature, a thickness, anaspherical data, and an effective focal length of each lens element.More specifically, the image-side surface 222 of the second lens element220 may comprise a convex portion 2222 in a vicinity of a periphery ofthe second lens element 220, the image-side surface 252 of the fifthlens element 250 may comprise a concave portion 2522 in a vicinity of aperiphery of the fifth lens element 250.

Here, for clearly showing the drawings of the present embodiment, onlythe surface shapes which are different from that in the first embodimentare labeled. Please refer to FIG. 12 for the optical characteristics ofeach lens element in the optical imaging lens 2 of the presentembodiment.

From the vertical deviation of each curve shown in FIG. 11(a), theoffset of the off-axis light relative to the image point may be withinabout ±0.025 mm. Referring to FIG. 11(b), the focus variation withrespect to the three different wavelengths (470 nm, 555 nm, 650 nm) inthe whole field may fall within about ±0.03 mm. Referring to FIG. 11(c),the focus variation with respect to the three different wavelengths (470nm, 555 nm, 650 nm) in the whole field may fall within about ±0.03 mm.Referring to FIG. 11(d), the variation of the distortion aberration ofthe optical imaging lens 2 may be within about ±4.5%.

Please refer to FIG. 46 and FIG. 46A for the values of ALT, AAG, BFL,TTL, TL, TL/(G2+G3), EFL/(T4+T7), TTL/T4, TTL/(T1+T5), TL/(T3+T7),ALT/G3, ALT/(G2+G6), EFL/(G1+G3), (T1+T6)/T3, TL/(G2+G5), EFL/(G4+G6),EFL/T4, TTL/(T2+T5), ALT/(T3+T7), TTL/G3, EFL/(G2+G6), ALT/(G1+G3) and(T1+T6)/G6 of the present embodiment.

In comparison with the first embodiment, TTL in the second embodimentmay be smaller, but Fno may be greater. Further, the difference betweenthe thicknesses in the optical axis and in the periphery regions may besmaller when compared to the first embodiment, so that the secondembodiment may be manufactured more easily and the yield rate may behigher when compared to the first embodiment.

Reference is now made to FIGS. 14-17. FIG. 14 illustrates an examplecross-sectional view of an optical imaging lens 3 having seven lenselements according to a third example embodiment. FIG. 15 shows examplecharts of longitudinal spherical aberration and other kinds of opticalaberrations of the optical imaging lens 3 according to the third exampleembodiment. FIG. 16 shows an example table of optical data of each lenselement of the optical imaging lens 3 according to the third exampleembodiment. FIG. 17 shows an example table of aspherical data of theoptical imaging lens 3 according to the third example embodiment. Thereference numbers labeled in the present embodiment are similar to thosein the first embodiment for the similar elements, but here the referencenumbers are initialed with 3, for example, reference number 331 forlabeling the object-side surface of the third lens element 330,reference number 332 for labeling the image-side surface of the thirdlens element 330, etc.

As shown in FIG. 14, the optical imaging lens 3 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise an aperture stop 300, a first lens element310, a second lens element 320, a third lens element 330, a fourth lenselement 340, a fifth lens element 350, a sixth lens element 360 and aseventh lens element 370.

The arrangement of the convex or concave surface structures, includingthe object-side surfaces 311, 321, 331, 341, 351, and 361 and theimage-side surfaces 312, 332, 342, 362 and 372 are generally similar tothe optical imaging lens 1, but the differences between the opticalimaging lens 1 and the optical imaging lens 3 may include the convex orconcave surface structures of the object-side surface 371 and theimage-side surfaces 322 and 352. Additional differences may include aradius of curvature, a thickness, aspherical data, and an effectivefocal length of each lens element. More specifically, the image-sidesurface 322 of the second lens element 320 may comprise a convex portion3222 in a vicinity of a periphery of the second lens element 320, theimage-side surface 352 of the fifth lens element 350 may comprise aconcave portion 3522 in a vicinity of a periphery of the fifth lenselement 350, the object-side surface 371 of the seventh lens element 370may comprise a convex portion 3712 in a vicinity of a periphery of theseventh lens element 370.

Here, for clearly showing the drawings of the present embodiment, onlythe surface shapes which are different from that in the first embodimentare labeled. Please refer to FIG. 16 for the optical characteristics ofeach lens element in the optical imaging lens 3 of the presentembodiment.

From the vertical deviation of each curve shown in FIG. 15(a), theoffset of the off-axis light relative to the image point may be withinabout ±0.03 mm. Referring to FIG. 15(b), the focus variation withrespect to the three different wavelengths (470 nm, 555 nm, 650 nm) inthe whole field may fall within about ±0.035 mm. Referring to FIG.15(c), the focus variation with respect to the three differentwavelengths (470 nm, 555 nm, 650 nm) in the whole field may fall withinabout ±0.03 mm. Referring to FIG. 15(d), the variation of the distortionaberration of the optical imaging lens 3 may be within about ±4%.

Please refer to FIG. 46 and FIG. 46A for the values of ALT, AAG, BFL,TTL, TL, TL/(G2+G3), EFL/(T4+T7), TTL/T4, TTL/(T1+T5), TL/(T3+T7),ALT/G3, ALT/(G2+G6), EFL/(G1+G3), (T1+T6)/T3, TL/(G2+G5), EFL/(G4+G6),EFL/T4, TTL/(T2+T5), ALT/(T3+T7), TTL/G3, EFL/(G2+G6), ALT/(G1+G3) and(T1+T6)/G6 of the present embodiment.

In comparison with the first embodiment, Fno in the third embodiment maybe greater. Further, the difference between the thicknesses in theoptical axis and in the periphery regions may be smaller when comparedto the first embodiment, so that the third embodiment may bemanufactured more easily and the yield rate may be higher when comparedto the first embodiment.

Reference is now made to FIGS. 18-21. FIG. 18 illustrates an examplecross-sectional view of an optical imaging lens 4 having seven lenselements according to a fourth example embodiment. FIG. 19 shows examplecharts of longitudinal spherical aberration and other kinds of opticalaberrations of the optical imaging lens 4 according to the fourthembodiment. FIG. 20 shows an example table of optical data of each lenselement of the optical imaging lens 4 according to the fourth exampleembodiment. FIG. 21 shows an example table of aspherical data of theoptical imaging lens 4 according to the fourth example embodiment. Thereference numbers labeled in the present embodiment are similar to thosein the first embodiment for the similar elements, but here the referencenumbers are initialed with 4, for example, reference number 431 forlabeling the object-side surface of the third lens element 430,reference number 432 for labeling the image-side surface of the thirdlens element 430, etc.

As shown in FIG. 18, the optical imaging lens 4 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise an aperture stop 400, a first lens element410, a second lens element 420, a third lens element 430, a fourth lenselement 440, a fifth lens element 450, a sixth lens element 460 and aseventh lens element 470.

The arrangement of the convex or concave surface structures, includingthe object-side surfaces 411, 421, 431, 441, 451, and 461 and theimage-side surfaces 412, 432, 442, 452, 462 and 472 are generallysimilar to the optical imaging lens 1, but the refracting power of thesecond lens element 420 is positive and the differences between theoptical imaging lens 1 and the optical imaging lens 4 may include theconvex or concave surface structures of the object-side surface 471 andthe image-side surface 422. Additional differences may include a radiusof curvature, a thickness, aspherical data, and an effective focallength of each lens element. More specifically, the image-side surface422 of the fourth lens element 420 may comprise a convex portion 4222 ina vicinity of a periphery of the second lens element 420, theobject-side surface 471 of the seventh lens element 470 may comprise aconvex portion 4712 in a vicinity of a periphery of the seventh lenselement 470.

Here, for clearly showing the drawings of the present embodiment, onlythe surface shapes which are different from that in the first embodimentare labeled. Please refer to FIG. 20 for the optical characteristics ofeach lens elements in the optical imaging lens 4 of the presentembodiment.

From the vertical deviation of each curve shown in FIG. 19(a), theoffset of the off-axis light relative to the image point may be withinabout ±0.025 mm. Referring to FIG. 19(b), the focus variation withrespect to the three different wavelengths (470 nm, 555 nm, 650 nm) inthe whole field may fall within about ±0.03 mm. Referring to FIG. 19(c),the focus variation with respect to the three different wavelengths (470nm, 555 nm, 650 nm) in the whole field may fall within about ±0.04 mm.Referring to FIG. 19(d), the variation of the distortion aberration ofthe optical imaging lens 4 may be within about ±4.5%.

Please refer to FIG. 46 and FIG. 46A for the values of ALT, AAG, BFL,TTL, TL, TL/(G2+G3), EFL/(T4+T7), TTL/T4, TTL/(T1+T5), TL/(T3+T7),ALT/G3, ALT/(G2+G6), EFL/(G1+G3), (T1+T6)/T3, TL/(G2+G5), EFL/(G4+G6),EFL/T4, TTL/(T2+T5), ALT/(T3+T7), TTL/G3, EFL/(G2+G6), ALT/(G1+G3) and(T1+T6)/G6 of the present embodiment.

In comparison with the first embodiment, TTL in the fourth embodimentmay be smaller. Further, the difference between the thicknesses in theoptical axis and in the periphery regions may be smaller when comparedto the first embodiment, so that the fourth embodiment may bemanufactured more easily and the yield rate may be higher when comparedto the first embodiment.

Reference is now made to FIGS. 22-25. FIG. 22 illustrates an examplecross-sectional view of an optical imaging lens 5 having seven lenselements according to a fifth example embodiment. FIG. 23 shows examplecharts of longitudinal spherical aberration and other kinds of opticalaberrations of the optical imaging lens 5 according to the fifthembodiment. FIG. 24 shows an example table of optical data of each lenselement of the optical imaging lens 5 according to the fifth exampleembodiment. FIG. 25 shows an example table of aspherical data of theoptical imaging lens 5 according to the fifth example embodiment. Thereference numbers labeled in the present embodiment are similar to thosein the first embodiment for the similar elements, but here the referencenumbers are initialed with 5, for example, reference number 531 forlabeling the object-side surface of the third lens element 530,reference number 532 for labeling the image-side surface of the thirdlens element 530, etc.

As shown in FIG. 22, the optical imaging lens 5 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise an aperture stop 500, a first lens element510, a second lens element 520, a third lens element 530, a fourth lenselement 540, a fifth lens element 550, a sixth lens element 560 and aseventh lens element 570.

The arrangement of the convex or concave surface structures, includingthe object-side surfaces 511, 521, 531, 541, 551, and 561 and theimage-side surfaces 512, 522, 532, 542, 552, 562 and 572 are generallysimilar to the optical imaging lens 1, but the differences between theoptical imaging lens 1 and the optical imaging lens 5 may include theconvex or concave surface structures of the object-side surface 571.Additional differences may include a radius of curvature, a thickness,aspherical data, and an effective focal length of each lens element.More specifically, the object-side surface 571 of the seventh lenselement 570 may comprise a convex portion 5712 in a vicinity of aperiphery of the seventh lens element 570.

Here, for clearly showing the drawings of the present embodiment, onlythe surface shapes which are different from that in the first embodimentare labeled. FIG. 24 depicts the optical characteristics of each lenselements in the optical imaging lens 5 of the present embodiment.

From the vertical deviation of each curve shown in FIG. 23(a), theoffset of the off-axis light relative to the image point may be withinabout ±0.025 mm. Referring to FIG. 23(b), the focus variation withrespect to the three different wavelengths (470 nm, 555 nm, 650 nm) inthe whole field may fall within about ±0.03 mm. Referring to FIG. 23(c),the focus variation with respect to the three different wavelengths (470nm, 555 nm, 650 nm) in the whole field may fall within about ±0.03 mm.Referring to FIG. 23(d), the variation of the distortion aberration ofthe optical imaging lens 5 may be within about ±4.5%.

Please refer to FIG. 46 and FIG. 46A for the values of ALT, AAG, BFL,TTL, TL, TL/(G2+G3), EFL/(T4+T7), TTL/T4, TTL/(T1+T5), TL/(T3+T7),ALT/G3, ALT/(G2+G6), EFL/(G1+G3), (T1+T6)/T3, TL/(G2+G5), EFL/(G4+G6),EFL/T4, TTL/(T2+T5), ALT/(T3+T7), TTL/G3, EFL/(G2+G6), ALT/(G1+G3) and(T1+T6)/G6 of the present embodiment.

In comparison with the first embodiment, TTL in the fifth embodiment maybe smaller. Further, the difference between the thicknesses in theoptical axis and in the periphery regions may be smaller when comparedto the first embodiment, so that the fifth embodiment may bemanufactured more easily and the yield rate may be higher when comparedto the first embodiment.

Reference is now made to FIGS. 26-29. FIG. 26 illustrates an examplecross-sectional view of an optical imaging lens 6 having seven lenselements according to a sixth example embodiment. FIG. 27 shows examplecharts of longitudinal spherical aberration and other kinds of opticalaberrations of the optical imaging lens 6 according to the sixthembodiment. FIG. 28 shows an example table of optical data of each lenselement of the optical imaging lens 6 according to the sixth exampleembodiment. FIG. 29 shows an example table of aspherical data of theoptical imaging lens 6 according to the sixth example embodiment. Thereference numbers labeled in the present embodiment are similar to thosein the first embodiment for the similar elements, but here the referencenumbers are initialed with 6, for example, reference number 631 forlabeling the object-side surface of the third lens element 630,reference number 632 for labeling the image-side surface of the thirdlens element 630, etc.

As shown in FIG. 26, the optical imaging lens 6 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise an aperture stop 600, a first lens element610, a second lens element 620, a third lens element 630, a fourth lenselement 640, a fifth lens element 650, a sixth lens element 660 and aseventh lens element 670.

The arrangement of the convex or concave surface structures, includingthe object-side surfaces 611, 621, 631, 651, and 661 and the image-sidesurfaces 612, 622, 632, 652, 662 and 672 are generally similar to theoptical imaging lens 1, but the refracting power of the fifth lenselement 650 is negative and the differences between the optical imaginglens 1 and the optical imaging lens 6 may include the convex or concavesurface structures of the object-side surfaces 641 and 671 and theimage-side surface 622. Additional differences may include a radius ofcurvature, a thickness, aspherical data, and an effective focal lengthof each lens element. More specifically, the object-side surface 641 ofthe fourth lens element 640 may comprise a concave portion 6411 in avicinity of the optical axis, the image-side surface 642 of the fourthlens element 640 may comprise a convex portion 6421 in a vicinity of theoptical axis, the object-side surface 671 of the seventh lens element670 may comprise a convex portion 6712 in a vicinity of a periphery ofthe seventh lens element 670.

Here, for clearly showing the drawings of the present embodiment, onlythe surface shapes which are different from that in the first embodimentare labeled. Please refer to FIG. 28 for the optical characteristics ofeach lens elements in the optical imaging lens 6 of the presentembodiment.

From the vertical deviation of each curve shown in FIG. 27(a), theoffset of the off-axis light relative to the image point may be withinabout ±0.025 mm. Referring to FIG. 27(b), the focus variation withrespect to the three different wavelengths (470 nm, 555 nm, 650 nm) inthe whole field may fall within about ±0.03 mm. Referring to FIG. 23(c),the focus variation with respect to the three different wavelengths (470nm, 555 nm, 650 nm) in the whole field may fall within about ±0.04 mm.Referring to FIG. 27(d), the variation of the distortion aberration ofthe optical imaging lens 6 may be within about ±3.5%.

Please refer to FIG. 46 and FIG. 46A for the values of ALT, AAG, BFL,TTL, TL, TL/(G2+G3), EFL/(T4+T7), TTL/T4, TTL/(T1+T5), TL/(T3+T7),ALT/G3, ALT/(G2+G6), EFL/(G1+G3), (T1+T6)/T3, TL/(G2+G5), EFL/(G4+G6),EFL/T4, TTL/(T2+T5), ALT/(T3+T7), TTL/G3, EFL/(G2+G6), ALT/(G1+G3) and(T1+T6)/G6 of the present embodiment.

In comparison with the first embodiment, Fno and HFOV in the sixthembodiment may be greater, and the variation of the distortion may besmaller. Further, the difference between the thicknesses in the opticalaxis and in the periphery regions may be smaller when compared to thefirst embodiment, so that the sixth embodiment may be manufactured moreeasily and the yield rate may be higher when compared to the firstembodiment.

Reference is now made to FIGS. 30-33. FIG. 30 illustrates an examplecross-sectional view of an optical imaging lens 7 having seven lenselements according to a seventh example embodiment. FIG. 31 showsexample charts of longitudinal spherical aberration and other kinds ofoptical aberrations of the optical imaging lens 7 according to theseventh embodiment. FIG. 32 shows an example table of optical data ofeach lens element of the optical imaging lens 7 according to the seventhexample embodiment. FIG. 33 shows an example table of aspherical data ofthe optical imaging lens 7 according to the seventh example embodiment.The reference numbers labeled in the present embodiment are similar tothose in the first embodiment for the similar elements, but here thereference numbers are initialed with 7, for example, reference number731 for labeling the object-side surface of the third lens element 730,reference number 732 for labeling the image-side surface of the thirdlens element 730, etc.

As shown in FIG. 30, the optical imaging lens 7 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise an aperture stop 700, a first lens element710, a second lens element 720, a third lens element 730, fourth lenselement 740, a fifth lens element 750, a sixth lens element 760 and aseventh lens element 770.

The arrangement of the convex or concave surface structures, includingthe object-side surfaces 711, 721, 731, 741, 751, and 761 and theimage-side surfaces 712, 732, 742, 752, 762 and 772 are generallysimilar to the optical imaging lens 1, but the refracting power of thesecond lens element 720 is positive and the differences between theoptical imaging lens 1 and the optical imaging lens 7 may include theconvex or concave surface structures of the object-side surface 771 andthe image-side surface 722. Additional differences may include a radiusof curvature, a thickness, aspherical data, and an effective focallength of each lens element. More specifically, the image-side surface722 of the second lens element 720 may comprise a convex portion 7222 ina vicinity of a periphery of the second lens element 720, theobject-side surface 771 of the seventh lens element 770 may comprise aconvex portion 7712 in a vicinity of a periphery of the seventh lenselement 770.

Here, for clearly showing the drawings of the present embodiment, onlythe surface shapes which are different from that in the first embodimentare labeled. Please refer to FIG. 32 for the optical characteristics ofeach lens elements in the optical imaging lens 7 of the presentembodiment.

From the vertical deviation of each curve shown in FIG. 31(a), theoffset of the off-axis light relative to the image point may be withinabout ±0.03 mm. Referring to FIG. 31(b), the focus variation withrespect to the three different wavelengths (470 nm, 555 nm, 650 nm) inthe whole field may fall within about ±0.03 mm. Referring to FIG. 31(c),the focus variation with respect to the three different wavelengths (470nm, 555 nm, 650 nm) in the whole field may fall within about ±0.03 mm.Referring to FIG. 31(d), the variation of the distortion aberration ofthe optical imaging lens 7 may be within about ±4.5%.

Please refer to FIG. 46 and FIG. 46A for the values of ALT, AAG, BFL,TTL, TL, TL/(G2+G3), EFL/(T4+T7), TTL/T4, TTL/(T1+T5), TL/(T3+T7),ALT/G3, ALT/(G2+G6), EFL/(G1+G3), (T1+T6)/T3, TL/(G2+G5), EFL/(G4+G6),EFL/T4, TTL/(T2+T5), ALT/(T3+T7), TTL/G3, EFL/(G2+G6), ALT/(G1+G3) and(T1+T6)/G6 of the present embodiment.

In comparison with the first embodiment, Fno in the seventh embodimentmay be greater. Further, the difference between the thicknesses in theoptical axis and in the periphery regions may be smaller when comparedto the first embodiment, so that the seventh embodiment may bemanufactured more easily and the yield rate may be higher when comparedto the first embodiment.

Reference is now made to FIGS. 34-37. FIG. 34 illustrates an examplecross-sectional view of an optical imaging lens 8 having seven lenselements according to an eighth example embodiment. FIG. 35 showsexample charts of longitudinal spherical aberration and other kinds ofoptical aberrations of the optical imaging lens 8 according to theeighth embodiment. FIG. 36 shows an example table of optical data ofeach lens element of the optical imaging lens 8 according to the eighthexample embodiment. FIG. 37 shows an example table of aspherical data ofthe optical imaging lens 8 according to the eighth example embodiment.The reference numbers labeled in the present embodiment are similar tothose in the first embodiment for the similar elements, but here thereference numbers are initialed with 8, for example, reference number831 for labeling the object-side surface of the third lens element 830,reference number 832 for labeling the image-side surface of the thirdlens element 830, etc.

As shown in FIG. 34, the optical imaging lens 8 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise an aperture stop 800, a first lens element810, a second lens element 820, a third lens element 830, a fourth lenselement 840, a fifth lens element 850, a sixth lens element 860 and aseventh lens element 870.

The arrangement of the convex or concave surface structures, includingthe object-side surfaces 811, 821, 831, 841, 851, and 861 and theimage-side surfaces 812, 822, 832, 862 and 872 are generally similar tothe optical imaging lens 1, but the differences between the opticalimaging lens 1 and the optical imaging lens 8 may include the convex orconcave surface structures of the object-side surface 871 and theimage-side surfaces 842 and 852. Additional differences may include aradius of curvature, a thickness, aspherical data, and an effectivefocal length of each lens element. More specifically, the image-sidesurface 842 of the fourth lens element 840 may comprise a convex portion8421 in a vicinity of the optical axis, the image-side surface 852 ofthe fifth lens element 850 may comprise a concave portion 8522 in avicinity of a periphery of the fifth lens element 850, the object-sidesurface 871 of the seventh lens element 870 may comprise a convexportion 8712 in a vicinity of a periphery of the seventh lens element870.

Here, for clearly showing the drawings of the present embodiment, onlythe surface shapes which are different from that in the first embodimentare labeled. Please refer to FIG. 36 for the optical characteristics ofeach lens elements in the optical imaging lens 8 of the presentembodiment.

From the vertical deviation of each curve shown in FIG. 35(a), theoffset of the off-axis light relative to the image point may be withinabout ±0.025 mm. Referring to FIG. 35(b), the focus variation withrespect to the three different wavelengths (470 nm, 555 nm, 650 nm) inthe whole field may fall within about ±0.03 mm. Referring to FIG. 35(c),the focus variation with respect to the three different wavelengths (470nm, 555 nm, 650 nm) in the whole field may fall within about ±0.03 mm.Referring to FIG. 35(d), the variation of the distortion aberration ofthe optical imaging lens 8 may be within about ±4%.

Please refer to FIG. 46 and FIG. 46A for the values of ALT, AAG, BFL,TTL, TL, TL/(G2+G3), EFL/(T4+T7), TTL/T4, TTL/(T1+T5), TL/(T3+T7),ALT/G3, ALT/(G2+G6), EFL/(G1+G3), (T1+T6)/T3, TL/(G2+G5), EFL/(G4+G6),EFL/T4, TTL/(T2+T5), ALT/(T3+T7), TTL/G3, EFL/(G2+G6), ALT/(G1+G3) and(T1+T6)/G6 of the present embodiment.

In comparison with the first embodiment, TTL in the eighth embodimentmay be smaller, Fno may be greater, and the variation of the distortionaberration may be smaller. Further, the difference between thethicknesses in the optical axis and in the periphery regions may besmaller when compared to the first embodiment, so that the eighthembodiment may be manufactured more easily and the yield rate may behigher when compared to the first embodiment.

Reference is now made to FIGS. 38-41. FIG. 38 illustrates an examplecross-sectional view of an optical imaging lens 9 having seven lenselements according to a ninth example embodiment. FIG. 39 shows examplecharts of longitudinal spherical aberration and other kinds of opticalaberrations of the optical imaging lens 9 according to the ninthembodiment. FIG. 40 shows an example table of optical data of each lenselement of the optical imaging lens 9 according to the ninth exampleembodiment. FIG. 41 shows an example table of aspherical data of theoptical imaging lens 9 according to the ninth example embodiment. Thereference numbers labeled in the present embodiment are similar to thosein the first embodiment for the similar elements, but here the referencenumbers are initialed with 9, for example, reference number 931 forlabeling the object-side surface of the third lens element 930,reference number 932 for labeling the image-side surface of the thirdlens element 930, etc.

As shown in FIG. 38, the optical imaging lens 9 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise an aperture stop 900, a first lens element910, a second lens element 920, a third lens element 930, a fourth lenselement 940, a fifth lens element 950, a sixth lens element 960 andseventh lens element 970.

The arrangement of the convex or concave surface structures, includingthe object-side surfaces 911, 921, 931, 941, 951, and 961 and theimage-side surfaces 912, 922, 932, 942, 962 and 972 are generallysimilar to the optical imaging lens 1, but the differences between theoptical imaging lens 1 and the optical imaging lens 9 may include theconvex or concave surface structures of the object-side surface 971 andthe image-side surface 952. Additional differences may include a radiusof curvature, a thickness, aspherical data, and an effective focallength of each lens element. More specifically, the image-side surface952 of the fifth lens element 950 may comprise a concave portion 9522 ina vicinity of a periphery of the fifth lens element 950, the object-sidesurface 971 of the seventh lens element 970 may comprise a convexportion 9712 in a vicinity of a periphery of the seventh lens element970.

Here, for clearly showing the drawings of the present embodiment, onlythe surface shapes which are different from that in the first embodimentare labeled. Please refer to FIG. 40 for the optical characteristics ofeach lens elements in the optical imaging lens 9 of the presentembodiment.

From the vertical deviation of each curve shown in FIG. 39(a), theoffset of the off-axis light relative to the image point may be withinabout ±0.03 mm. Referring to FIG. 39(b), the focus variation withrespect to the three different wavelengths (470 nm, 555 nm, 650 nm) inthe whole field may fall within about ±0.03 mm. Referring to FIG. 39(c),the focus variation with respect to the three different wavelengths (470nm, 555 nm, 650 nm) in the whole field may fall within about ±0.03 mm.Referring to FIG. 39(d), the variation of the distortion aberration ofthe optical imaging lens 9 may be within about ±4.5%.

Please refer to FIG. 46 and FIG. 46A for the values of ALT, AAG, BFL,TTL, TL, TL/(G2+G3), EFL/(T4+T7), TTL/T4, TTL/(T1+T5), TL/(T3+T7),ALT/G3, ALT/(G2+G6), EFL/(G1+G3), (T1+T6)/T3, TL/(G2+G5), EFL/(G4+G6),EFL/T4, TTL/(T2+T5), ALT/(T3+T7), TTL/G3, EFL/(G2+G6), ALT/(G1+G3) and(T1+T6)/G6 of the present embodiment.

In comparison with the first embodiment, TTL in the ninth embodiment maybe smaller. Further, the different between the thicknesses in theoptical axis and in the periphery regions may be smaller when comparedto the first embodiment, so that the ninth embodiment may bemanufactured more easily and the yield rate may be higher when comparedto the first embodiment.

Reference is now made to FIGS. 42-45. FIG. 42 illustrates an examplecross-sectional view of an optical imaging lens 10′ having seven lenselements according to a tenth example embodiment. FIG. 43 shows examplecharts of longitudinal spherical aberration and other kinds of opticalaberrations of the optical imaging lens 10′ according to the tenthembodiment. FIG. 44 shows an example table of optical data of each lenselement of the optical imaging lens 10′ according to the tenth exampleembodiment. FIG. 45 shows an example table of aspherical data of theoptical imaging lens 10′ according to the tenth example embodiment. Thereference numbers labeled in the present embodiment are similar to thosein the first embodiment for the similar elements, but here the referencenumbers are initialed with 10′, for example, reference number 10′31 forlabeling the object-side surface of the third lens element 10′30,reference number 10′32 for labeling the image-side surface of the thirdlens element 10′30, etc.

As shown in FIG. 42, the optical imaging lens 10′ of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise an aperture stop 10′00, a first lenselement 10′10, a second lens element 10′20, a third lens element 10′30,a fourth lens element 10′40, a fifth lens element 10′50, a sixth lenselement 10′60 and seventh lens element 10′70.

The arrangement of the convex or concave surface structures, includingthe object-side surfaces 10′11, 10′21, 10′31, 10′41, 10′51, and 10′61and the image-side surfaces 10′12, 10′22, 10′32, 10′52, 10′62 and 10′72are generally similar to the optical imaging lens 1, but the differencesbetween the optical imaging lens 1 and the optical imaging lens 10′ mayinclude the convex or concave surface structures of the object-sidesurface 10′71 and the image-side surface 10′42. Additional differencesmay include a radius of curvature, a thickness, aspherical data, and aneffective focal length of each lens element. More specifically, theimage-side surface 10′42 of the fourth lens element 10′40 may comprise aconvex portion 10′421 in a vicinity of the optical axis, the object-sidesurface 10′71 of the seventh lens element 10′70 may comprise a convexportion 10′712 in a vicinity of a periphery of the seventh lens element10′70.

Here, for clearly showing the drawings of the present embodiment, onlythe surface shapes which are different from that in the first embodimentare labeled. Please refer to FIG. 44 for the optical characteristics ofeach lens elements in the optical imaging lens 10′ of the presentembodiment.

From the vertical deviation of each curve shown in FIG. 43(a), theoffset of the off-axis light relative to the image point may be withinabout ±0.03 mm. Referring to FIG. 43(b), the focus variation withrespect to the three different wavelengths (470 nm, 555 nm, 650 nm) inthe whole field may fall within about ±0.04 mm. Referring to FIG. 43(c),the focus variation with respect to the three different wavelengths (470nm, 555 nm, 650 nm) in the whole field may fall within about ±0.06 mm.Referring to FIG. 43(d), the variation of the distortion aberration ofthe optical imaging lens 10′ may be within about ±6%.

Please refer to FIG. 46 and FIG. 46A for the values of ALT, AAG, BFL,TTL, TL, TL/(G2+G3), EFL/(T4+T7), TTL/T4, TTL/(T1+T5), TL/(T3+T7),ALT/G3, ALT/(G2+G6), EFL/(G1+G3), (T1+T6)/T3, TL/(G2+G5), EFL/(G4+G6),EFL/T4, TTL/(T2+T5), ALT/(T3+T7), TTL/G3, EFL/(G2+G6), ALT/(G1+G3) and(T1+T6)/G6 of the present embodiment.

In comparison with the first embodiment, TTL in the tenth embodiment maybe smaller, but Fno may be greater. Further, the different between thethicknesses in the optical axis and in the periphery regions may besmaller when compared to the first embodiment, so that the tenthembodiment may be manufactured more easily and the yield rate may behigher when compared to the first embodiment.

Please refer to FIG. 46 and FIG. 46A for the values of ALT, AAG, BFL,TTL, TL, TL/(G2+G3), EFL/(T4+T7), TTL/T4, TTL/(T1+T5), TL/(T3+T7),ALT/G3, ALT/(G2+G6), EFL/(G1+G3), (T1+T6)/T3, TL/(G2+G5), EFL/(G4+G6),EFL/T4, TTL/(T2+T5), ALT/(T3+T7), TTL/G3, EFL/(G2+G6), ALT/(G1+G3) and(T1+T6)/G6 of all ten embodiments, and it is clear that the opticalimaging lenses of the first to tenth embodiments may satisfy theInequalities (1) to (18).

With respect to the optical imaging lens of the present disclosure, theobject-side surface of the third lens element comprising a convexportion in a vicinity of a periphery region or the image-side surface ofthe third lens element comprising a concave portion in a vicinity of aperiphery has advantageous to focus lights. Further, the object-sidesurface of the fifth lens element comprising a convex portion in avicinity of the optical axis and image-side surface of the fifth lenselement comprising a concave portion in a vicinity of the optical axishave advantageous to correct aberrations from the first to fourth lenselements. Further, the object-side surface of the sixth lens elementcomprising a concave portion in a vicinity of the optical axis and theobject-side surface of the seventh lens element comprising a concaveportion in a vicinity of the optical axis may provide better imagingquality. The arrangement of the aforementioned convex or concave surfacestructures may shorten the length of the optical imaging lens whilemaintaining imaging quality.

For shortening the length of the optical imaging lens, the thickness ofeach lens element and air gaps between adjacent lens elements should bedecreased appropriately. However, the design of the thickness of eachlens element may consider the air gaps if the optical imaging lens needsto be manufactured more easily and to provide better imaging quality.Therefore, the arrangement of the optical imaging lens may be betterwhile the optical imaging lens satisfies inequalities as follows:

TL/(G2+G3)≤9.90, and the more perfect range may satisfy8.00≤TL/(G2+G3)≤9.90;TL/(T3+T7)≤8.20, and the more perfect range may satisfy6.80≤TL/(T3+T7)≤8.20;ALT/G3≤7.80, and the more perfect range may satisfy 5.70≤ALT/G3≤7.80;ALT/(G2+G6)≤9.50, and the more perfect range may satisfy4.20≤ALT/(G2+G6)≤9.50;(T1+T6)/T3≤8.60, and the more perfect range may satisfy4.70≤(T1+T6)/T3≤8.60;TL/(G2+G5)≤12.60, and the more perfect range may satisfy9.70≤TL/(G2+G5)≤12.60;ALT/(T3+T7)≤5.80, and the more perfect range may satisfy5.00≤ALT/(T3+T7)≤5.80;ALT/(G1+G3)≤7.60, and the more perfect range may satisfy5.50≤ALT/(G1+G3)≤7.60;(T1+T6)/G6≤5.80, and the more perfect range may satisfy1.90≤(T1+T6)/G6≤5.80.

Shortening EFL is advantageous to enlarge the field of view. Therefore,the size of the optical imaging lens may be reduced while enlarging thefield of view if EFL satisfies any one of inequalities as follow:

EFL/(T4+T7)≤5.20, and the more perfect range may satisfy4.30≤EFL/(T4+T7)≤5.20;EFL/(G1+G3)≤9.70, and the more perfect range may satisfy7.30≤EFL/(G1+G3)≤9.70;EFL/(G4+G6)≤10.10, and the more perfect range may satisfy5.20≤EFL/(G4+G6)≤10.10;EFL/T4≤9.80, and the more perfect range may satisfy 7.70≤EFL/T4≤9.80;EFL/(G2+G6)≤12.60, and the more perfect range may satisfy5.80≤EFL/(G2+G6)≤12.60.

When values of optical parameters are too small, the optical imaginglens can't be manufactured easily. Otherwise, when values of opticalparameters are too large, the length of the optical imaging lens is toolong. With respect to aforementioned problems, the length of the opticalimaging lens and the optical parameter of each lens element should besatisfy any one of inequalities as follow:

TTL/T4≤13.10, and the more perfect range may satisfy 10.10≤TTL/T4≤13.10;TTL/(T1+T5)≤6.80, and the more perfect range may satisfy4.60≤TTL/(T1+T5)≤6.80;TTL/(T2+T5)≤9.60, and the more perfect range may satisfy8.40≤TTL/(T2+T5)≤9.60;TTL/G3≤13.80, and the more perfect range may satisfy 10.00≤TTL/G3≤13.80.

Moreover, the optical parameters according to one embodiment could beselectively incorporated in other embodiments to limit and enhance thestructure of the optical imaging lens. In consideration of thenon-predictability of the optical imaging lens, while the opticalimaging lens may satisfy any one of inequalities described above, theoptical imaging lens herein perfectly may achieve shorten length,provide an enlarged aperture, increase imaging quality and/or assemblyyield, and/or effectively improve drawbacks of a typical optical imaginglens.

Any one of the aforementioned inequalities could be selectivelyincorporated in other inequalities to apply to the present embodiments,but are not limited. Embodiments according to the present disclosure arenot limited and could be selectively incorporated in other embodimentsdescribed herein. In some embodiments, more details about the parameterscould be incorporated to enhance the control for the system performanceand/or resolution. For example, the object-side surface of the firstlens element may comprise a convex portion in a vicinity of the opticalaxis. It is noted that the details listed here could be incorporatedinto example embodiments if no inconsistency occurs.

According to above disclosure, the longitudinal spherical aberration,the astigmatism aberration and the variation of the distortionaberration of each embodiment meet the use requirements of variouselectronic products which implement an optical imaging lens. Moreover,the off-axis light with respect to 470 nm, 555 nm and 650 nm wavelengthsmay be focused around an image point, and the offset of the off-axislight for each curve relative to the image point may be controlled toeffectively inhibit the longitudinal spherical aberration, theastigmatism aberration and the variation of the distortion aberration.Further, as shown by the imaging quality data provided for eachembodiment, the distance between the 470 nm, 555 nm and 650 nmwavelengths may indicate that focusing ability and inhibiting abilityfor dispersion is provided for different wavelengths.

While various embodiments in accordance with the disclosed principlesbeen described above, it should be understood that they are presented byway of example only, and are not limiting. Thus, the breadth and scopeof exemplary embodiment(s) should not be limited by any of theabove-described embodiments, but should be defined only in accordancewith the claims and their equivalents issuing from this disclosure.Furthermore, the above advantages and features are provided in describedembodiments, but shall not limit the application of such issued claimsto processes and structures accomplishing any or all of the aboveadvantages.

Additionally, the section headings herein are provided for consistencywith the suggestions under 37 C.F.R. 1.77 or otherwise to provideorganizational cues. These headings shall not limit or characterize theinvention(s) set out in any claims that may issue from this disclosure.Specifically, a description of a technology in the “Background” is notto be construed as an admission that technology is prior art to anyinvention(s) in this disclosure. Furthermore, any reference in thisdisclosure to “invention” in the singular should not be used to arguethat there is only a single point of novelty in this disclosure.Multiple inventions may be set forth according to the limitations of themultiple claims issuing from this disclosure, and such claimsaccordingly define the invention(s), and their equivalents, that areprotected thereby. In all instances, the scope of such claims shall beconsidered on their own merits in light of this disclosure, but shouldnot be constrained by the headings herein.

1. An optical imaging lens, sequentially from an object side to an imageside along an optical axis, comprising first, second, third, fourth,fifth, sixth and seventh lens elements, each of the first, second,third, fourth, fifth, sixth and seventh lens elements having anobject-side surface facing toward the object side and an image-sidesurface facing toward the image side, the optical imaging lens comprisesno other lens elements having refracting power beyond the first, second,third, fourth, fifth, sixth and seventh lens elements, wherein: theobject-side surface of the third lens element comprises a convex portionin a vicinity of a periphery of the third lens element, and theimage-side surface of the third lens element comprises a concave portionin a vicinity of the optical axis; the object-side surface of the fifthlens element comprises a convex portion in a vicinity of the opticalaxis; the image-side surface of the fifth lens element comprises aconcave portion in a vicinity of the optical axis; the object-sidesurface of the sixth lens element comprises a concave portion in avicinity of the optical axis; and the object-side surface of the seventhlens element comprises a concave portion in a vicinity of the opticalaxis.
 2. The optical imaging lens according to claim 1, wherein adistance from the object-side surface of the first lens element to theimage-side surface of the seventh lens element along the optical axis isrepresented by TL, an air gap between the second lens element and thethird lens element along the optical axis is represented by G2, an airgap between the third lens element and the fourth lens element along theoptical axis is represented by G3, and TL, G2, G3 satisfy an inequality:TL/(G2+G3)≤9.90.
 3. The optical imaging lens according to claim 1,wherein an effective focal length of the optical imaging lens isrepresented by EFL, a central thickness of the fourth lens element alongthe optical axis is represented by T4, a central thickness of theseventh lens element along the optical axis is represented by T7, andEFL, T4, T7 satisfy an inequality: EFL/(T4+T7)≤5.20.
 4. The opticalimaging lens according to claim 1, wherein a distance between theobject-side surface of the first lens element and an image plane alongthe optical axis is represented by TTL, a central thickness of thefourth lens element along the optical axis is represented by T4, and TTLand T4 satisfy an inequality: TTL/T4≤13.10.
 5. The optical imaging lensaccording to claim 1, wherein a distance between the object-side surfaceof the first lens element and an image plane along the optical axis isrepresented by TTL, a central thickness of the first lens element alongthe optical axis is represented by T1, a central thickness of the fifthlens element along the optical axis is represented by T5, and TTL, T1and T5 satisfy an inequality: TTL/(T1+T5)≤6.80.
 6. The optical imaginglens according to claim 1, wherein a distance from the object-sidesurface of the first lens element to the image-side surface of theseventh lens element along the optical axis is represented by TL, acentral thickness of the third lens element along the optical axis isrepresented by T3, a central thickness of the seventh lens element alongthe optical axis is represented by T7, and TL, T3 and T7 satisfy aninequality: TL/(T3+T7)≤8.20.
 7. The optical imaging lens according toclaim 1, wherein a sum of the central thicknesses of the seven lenselements is represented by ALT, an air gap between the third lenselement and the fourth lens element along the optical axis isrepresented by G3, and ALT and G3 satisfy an inequality: ALT/G3≤7.80. 8.The optical imaging lens according to claim 1, wherein a sum of thecentral thicknesses of the seven lens elements is represented by ALT, anair gap between the second lens element and the third lens element alongthe optical axis is represented by G2, an air gap between the sixth lenselement and the seventh lens element along the optical axis isrepresented by G6, and ALT, G2 and G6 satisfy an inequality:ALT/(G2+G6)≤9.50.
 9. The optical imaging lens according to claim 1,wherein an effective focal length of the optical imaging lens isrepresented by EFL, an air gap between the first lens element and thesecond lens element along the optical axis is represented by G1, an airgap between the third lens element and the fourth lens element along theoptical axis is represented by G3, and EFL, G1 and G3 satisfy aninequality: EFL/(G1+G3)≤9.70.
 10. The optical imaging lens according toclaim 1, wherein a central thickness of the first lens element along theoptical axis is represented by T1, a central thickness of the third lenselement along the optical axis is represented by T3, a central thicknessof the sixth lens element along the optical axis is represented by T6,and T1, T3 and T6 satisfy an inequality: (T1+T6)/T3≤8.60.
 11. An opticalimaging lens, sequentially from an object side to an image side along anoptical axis, comprising first, second, third, fourth, fifth, sixth andseventh lens elements, each of the first, second, third, fourth, fifth,sixth and seventh lens elements having an object-side surface facingtoward the object side and an image-side surface facing toward the imageside, the optical imaging lens comprises no other lens elements havingrefracting power beyond the first, second, third, fourth, fifth, sixthand seventh lens elements, wherein: the image-side surface of the thirdlens element comprises a concave portion in a vicinity of a periphery ofthe third lens element and a concave portion in a vicinity of theoptical axis; the object-side surface of the fifth lens elementcomprises a convex portion in a vicinity of the optical axis; theimage-side surface of the fifth lens element comprises a concave portionin a vicinity of the optical axis; the object-side surface of the sixthlens element comprises a concave portion in a vicinity of the opticalaxis; and the image-side surface of the seventh lens element comprises aconcave portion in a vicinity of the optical axis.
 12. The opticalimaging lens according to claim 11, wherein a distance from theobject-side surface of the first lens element to the image-side surfaceof the seventh lens element along the optical axis is represented by TL,an air gap between the second lens element and the third lens elementalong the optical axis is represented by G2, an air gap between thefifth lens element and the sixth lens element along the optical axis isrepresented by G5, and TL, G2, G5 satisfy an inequality:TL/(G2+G5)≤12.60.
 13. The optical imaging lens according to claim 11,wherein an effective focal length of the optical imaging lens isrepresented by EFL, an air gap between the fourth lens element and thefifth lens element along the optical axis is represented by G4, an airgap between the sixth lens element and the seventh lens element alongthe optical axis is represented by G6, and EFL, G4, G6 satisfy aninequality: EFL/(G4+G6)≤10.10.
 14. The optical imaging lens according toclaim 11, wherein an effective focal length of the optical imaging lensis represented by EFL, a central thickness of the fourth lens elementalong the optical axis is represented by T4, and EFL and T4 satisfy aninequality: EFL/T4≤9.80.
 15. The optical imaging lens according to claim11, wherein a distance between the object-side surface of the first lenselement and an image plane along the optical axis is represented by TTL,a central thickness of the second lens element along the optical axis isrepresented by T2, a central thickness of the fifth lens element alongthe optical axis is represented by T5, and TTL, T2 and T5 satisfy aninequality: TTL/(T2+T5)≤9.60.
 16. The optical imaging lens according toclaim 11, wherein a sum of the central thicknesses of the seven lenselements is represented by ALT, a central thickness of the third lenselement along the optical axis is represented by T3, a central thicknessof the seventh lens element along the optical axis is represented by T7,and ALT, T3 and T7 satisfy an inequality: ALT/(T3+T7)≤5.80.
 17. Theoptical imaging lens according to claim 11, wherein a distance betweenthe object-side surface of the first lens element and an image planealong the optical axis is represented by TTL, an air gap between thethird lens element and the fourth lens element along the optical axis isrepresented by G3, and TTL and G3 satisfy an inequality: TTL/G3≤13.80.18. The optical imaging lens according to claim 11, wherein an effectivefocal length of the optical imaging lens is represented by EFL, an airgap between the second lens element and the third lens element along theoptical axis is represented by G2, an air gap between the sixth lenselement and the seventh lens element along the optical axis isrepresented by G6, and EFL, G2 and G6 satisfy an inequality:EFL/(G2+G6)≤12.60.
 19. The optical imaging lens according to claim 11,wherein a sum of the central thicknesses of the seven lens elements isrepresented by ALT, an air gap between the first lens element and thesecond lens element along the optical axis is represented by G1, an airgap between the third lens element and the fourth lens element along theoptical axis is represented by G3, and ALT, G1 and G3 satisfy aninequality: ALT/(G1+G3)≤7.60.
 20. The optical imaging lens according toclaim 11, wherein a central thickness of the first lens element alongthe optical axis is represented by T1, a central thickness of the sixthlens element along the optical axis is represented by T6, an air gapbetween the sixth lens element and the seventh lens element along theoptical axis is represented by G6, and T1, T6 and G6 satisfy aninequality: (T1+T6)/G6≤5.80.